YN900 is formed by 900 lamp beads with extra-large luminous area. In the same energy consumption, the luminous intensity of the lamp beads of YN900 is higher. YN900 adopts proprietary LED driving technology which does great help to effectively avoid corrugation and stroboscopic flash. It also adopts encoder digital dimming system which helps to make accurate and reliable dimming. YN900 is equipped with 8 channel grouping function and battery capacity testing function. And, it also supports remote controlling with remote controller, wireless controlling with mobile phone and group controlling the luminous intensity of YN900 etc. The multifunctional Type-D lamp holder configured is suitable for multiple different fastening methods.